Answer this question truthfully
### Question: What causes Kawasaki disease?
### Response: Kawasaki disease is a poorly understood illness. The cause has not been determined. It may be an autoimmune disorder. The disorder affects the mucus membranes, lymph nodes, walls of the blood vessels, and the heart.
Kawasaki disease can cause inflammation of blood vessels in the arteries, especially the coronary arteries. This inflammation can lead to aneurysms. An aneurysm can lead to a heart attack, even in young children, although this is rare.